Genetic Analysis of Quantitative Characters of Yedan 13 in Xinjiang Environment

In order to analysis genetic characteristics of yield,a population with 397 F2∶3families from an elite hybrid Yedan 13 was studied.The results showed that among ten Quantitative traits,ear diameter,kernel per row,cob diameter,row number,ear length had higher Hb2.In F1 generation and F2∶3 generation,kernel per row,kernel weight per ear,ear,length had higher heterosis.Weight of 100-kernel,rate of kernel production had weaker heterosis.Kernel per row,ear diameter,kernel per row,ear length are all significantly correlated with Single-plant yield.Ear length,kernel weight per ear and Weight of 100-kernel are significantly correlated with each other.Ear length and ear diameter are significantly and negatively correlated with each other.principle component analysis indicated that influencing Single-plant yield orderly are ear diameter,row number,ear length,kernel per row,rate of kernel production.As far as Yedan 13,a key factor to obtain higher yield is the increase of ear diameter and row number.